ทร- 

คำแปล
many words beginning with ทร- are pronounced with a ซor s sound. These words are sometimes misspelled with ซ instead of ทร ทร- words not found here must therefore be looked for under ซ

ทร- (ทอระ)

คำแปล
a prefix meaning bad, evil, ill, troublous = ทรกรรม bad deeds, bad offices